[1]} has adopted the RAdial Velocity Experiment (RAVE, [2]}) catalog in the training. Our one arcsec tolerance cross-matching returns only 70 stars. Moreover, the RAVE catalog includes [m/Fe] not [Fe/H]. The transfer from [m/Fe] to [Fe/H] could import bias or deviation using an empirical formula. Therefore, the RAVE catalog is not included in our training sample.
